Heat and moisture exchanger unit for respiratory mask



FIG. 1 is a front perspective view of a heat and moisture exchanger unit for respiratory mask showing a first embodiment of our new design;

FIG. 2 is a front perspective view thereof, in isolation;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a left side view thereof;

FIG. 8 is a right side view thereof;

FIG. 9 is a reverse perspective view thereof;

FIG. 10 is a front perspective view of a heat and moisture exchanger unit for respiratory mask showing a second embodiment of our new design;

FIG. 11 is a front perspective view thereof, in isolation;

FIG. 12 is a front view thereof;

FIG. 13 is a rear view thereof;

FIG. 14 is a top view thereof;

FIG. 15 is a bottom view thereof;

FIG. 16 is a left side view thereof;

FIG. 17 is a right side view thereof; and,

FIG. 18 is a reverse perspective view thereof.

The broken lines represent environmental structure of the heat and moisture exchanger unit for respiratory mask and do not form part of the claimed design. 

CLAIM The ornamental design for an heat and moisture exchanger unit for respiratory mask, as shown and described. 